Dear friends, Here are files under my /boot directory: # ls -l -rw-r--r-- 1 root root 186716 Nov 11 2019 config-4.9.0-11-amd64 -rw-r--r-- 1 root root 186696 Jan 20 12:38 config-4.9.0-12-amd64 drwxr-xr-x 5 root root 4096 May 28 20:14 grub -rw-r--r-- 1 root root 18158152 May 1 01:18 initrd.img-4.9.0-11-amd64 -rw-r--r-- 1 root root 18818504 May 28 20:14 initrd.img-4.9.0-12-amd64 -rw-r--r-- 1 root root 3204823 Nov 11 2019 System.map-4.9.0-11-amd64 -rw-r--r-- 1 root root 3206712 Jan 20 12:38 System.map-4.9.0-12-amd64 -rw-r--r-- 1 root root 4249376 Nov 11 2019 vmlinuz-4.9.0-11-amd64 -rw-r--r-- 1 root root 4261664 Jan 20 12:38 vmlinuz-4.9.0-12-amd64 # hostnamectl … Operating System: Debian GNU/Linux 9 (stretch) Kernel: Linux 4.9.0-12-amd64 Architecture: x86-64 Is it fine I delete all 4.9.0-11 files under /boot? Thank you very much. Michael |